Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses
Although cephalopods play a critical role in marine food webs both as predators and prey, there is a limited knowledge of several basic aspects of their ecology, including their habitat and trophic level, in the Southern Ocean. We examined the ecological role of several Southern Ocean cephalopod spe...
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ftnerc:oai:nora.nerc.ac.uk:511350 2023-05-15T13:49:32+02:00 Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses Guerreiro, Miguel Phillips, Richard A. Cherel, Yves Ceia, Filipe R. Alvito, Pedro Rosa, Rui Xavier, Jose C. 2015-06-18 text http://nora.nerc.ac.uk/id/eprint/511350/ https://nora.nerc.ac.uk/id/eprint/511350/1/Guerreiro%20et%20al%20%20MEPS.doc https://doi.org/10.3354/meps11266 en eng Inter-Research https://nora.nerc.ac.uk/id/eprint/511350/1/Guerreiro%20et%20al%20%20MEPS.doc Guerreiro, Miguel; Phillips, Richard A.; Cherel, Yves; Ceia, Filipe R.; Alvito, Pedro; Rosa, Rui; Xavier, Jose C. orcid:0000-0002-9621-6660 . 2015 Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses. Marine Ecology Progress Series, 530. 119-134. https://doi.org/10.3354/meps11266 <https://doi.org/10.3354/meps11266> Publication - Article PeerReviewed 2015 ftnerc https://doi.org/10.3354/meps11266 2023-02-04T19:41:53Z Although cephalopods play a critical role in marine food webs both as predators and prey, there is a limited knowledge of several basic aspects of their ecology, including their habitat and trophic level, in the Southern Ocean. We examined the ecological role of several Southern Ocean cephalopod species by analyzing δ13C and δ15N values in lower cephalopod beaks obtained from diet samples of wandering albatross Diomedea exulans from South Georgia (Atlantic Ocean), and from Crozet and Kerguelen Islands (Indian Ocean). Beak δ13C values ranged from -25.7 to -17.9‰, and were used to assign different cephalopod species to the subtropical, sub-Antarctic or Antarctic Zones. Beak δ15N values were more variable among species, ranging from 2.4 to 13.3‰, a difference of ~11‰ that represents approx. 3 trophic levels. Differences among islands in isotope ratios in the same cephalopod species (higher δ15N and lower δ13C values in South Georgia) were attributed to regional oceanographic processes. Antarctic cephalopods occupy niches similar to those found in some pelagic fish, seabirds and marine mammals. As cephalopods are key components in Southern Ocean food webs, these results greatly advance our understanding of the structure, energy and carbon flows in this polar ecosystem. Article in Journal/Newspaper Antarc* Antarctic Diomedea exulans Kerguelen Islands Southern Ocean Wandering Albatross Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Kerguelen Kerguelen Islands Indian Marine Ecology Progress Series 530 119 134 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
Although cephalopods play a critical role in marine food webs both as predators and prey, there is a limited knowledge of several basic aspects of their ecology, including their habitat and trophic level, in the Southern Ocean. We examined the ecological role of several Southern Ocean cephalopod species by analyzing δ13C and δ15N values in lower cephalopod beaks obtained from diet samples of wandering albatross Diomedea exulans from South Georgia (Atlantic Ocean), and from Crozet and Kerguelen Islands (Indian Ocean). Beak δ13C values ranged from -25.7 to -17.9‰, and were used to assign different cephalopod species to the subtropical, sub-Antarctic or Antarctic Zones. Beak δ15N values were more variable among species, ranging from 2.4 to 13.3‰, a difference of ~11‰ that represents approx. 3 trophic levels. Differences among islands in isotope ratios in the same cephalopod species (higher δ15N and lower δ13C values in South Georgia) were attributed to regional oceanographic processes. Antarctic cephalopods occupy niches similar to those found in some pelagic fish, seabirds and marine mammals. As cephalopods are key components in Southern Ocean food webs, these results greatly advance our understanding of the structure, energy and carbon flows in this polar ecosystem. |
format |
Article in Journal/Newspaper |
author |
Guerreiro, Miguel Phillips, Richard A. Cherel, Yves Ceia, Filipe R. Alvito, Pedro Rosa, Rui Xavier, Jose C. |
spellingShingle |
Guerreiro, Miguel Phillips, Richard A. Cherel, Yves Ceia, Filipe R. Alvito, Pedro Rosa, Rui Xavier, Jose C. Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses |
author_facet |
Guerreiro, Miguel Phillips, Richard A. Cherel, Yves Ceia, Filipe R. Alvito, Pedro Rosa, Rui Xavier, Jose C. |
author_sort |
Guerreiro, Miguel |
title |
Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses |
title_short |
Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses |
title_full |
Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses |
title_fullStr |
Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses |
title_full_unstemmed |
Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses |
title_sort |
habitat and trophic ecology of southern ocean cephalopods from stable isotope analyses |
publisher |
Inter-Research |
publishDate |
2015 |
url |
http://nora.nerc.ac.uk/id/eprint/511350/ https://nora.nerc.ac.uk/id/eprint/511350/1/Guerreiro%20et%20al%20%20MEPS.doc https://doi.org/10.3354/meps11266 |
geographic |
Antarctic Southern Ocean Kerguelen Kerguelen Islands Indian |
geographic_facet |
Antarctic Southern Ocean Kerguelen Kerguelen Islands Indian |
genre |
Antarc* Antarctic Diomedea exulans Kerguelen Islands Southern Ocean Wandering Albatross |
genre_facet |
Antarc* Antarctic Diomedea exulans Kerguelen Islands Southern Ocean Wandering Albatross |
op_relation |
https://nora.nerc.ac.uk/id/eprint/511350/1/Guerreiro%20et%20al%20%20MEPS.doc Guerreiro, Miguel; Phillips, Richard A.; Cherel, Yves; Ceia, Filipe R.; Alvito, Pedro; Rosa, Rui; Xavier, Jose C. orcid:0000-0002-9621-6660 . 2015 Habitat and trophic ecology of Southern Ocean cephalopods from stable isotope analyses. Marine Ecology Progress Series, 530. 119-134. https://doi.org/10.3354/meps11266 <https://doi.org/10.3354/meps11266> |
op_doi |
https://doi.org/10.3354/meps11266 |
container_title |
Marine Ecology Progress Series |
container_volume |
530 |
container_start_page |
119 |
op_container_end_page |
134 |
_version_ |
1766251503231696896 |